Pt(221) - \(\ce{ HClO4 }\)

echemdb identifier: briega_martos_2020_hydrogen_135452_f3_olive
tags: BCV

A cyclic voltammogramm for Pt(221) recorded in \(\ce{ HClO4 }\) at a scan rate of \(50 \; \mathrm{mV\,s^{-1}}\) from Figure 3 in V. Briega-Martos et al. Hydrogen peroxide and oxygen reduction studies on Pt stepped surfaces: surface charge effects and mechanistic consequences. Electrochimica Acta, 334:135452, 2020.

Further information

The figure shows digitized data.

The Pt(221) electrode was prepared by:
* Annealed in a propane-flame
* cooled in Ar/H2 (3:1) reducing atmosphere
* protected with an ultrapure water drop.

Metadata

Details on the electrochemical system (yaml)

electrodes:
- crystallographicOrientation: poly
  function: counter electrode
  material: Pt
  name: CE
  shape:
    type: coiled wire
- function: reference electrode
  name: REF
  type: RHE
- crystallographicOrientation: '221'
  function: working electrode
  geometricElectrolyteContactArea:
    unit: 1 / cm2
  material: Pt
  name: WE
  preparationProcedure:
    description:
    - Annealed in a propane-flame
    - cooled in Ar/H2 (3:1) reducing atmosphere
    - protected with an ultrapure water drop.
  shape:
    diameter:
      unit: mm
      value: 2
    height:
      unit: mm
    type: bead
electrolyte:
  components:
  - name: water
    source:
      quality: ultrapure water
    type: solvent
  - concentration:
      unit: 0.1 mol / l
    name: HClO4
    source:
      purity:
        grade: '>99%'
      supplier: Merck
    type: acid
  type: aqueous
type: electrochemical

Citation key (bibtex)

@article{briega_martos_2020_hydrogen_135452,
    author = "Briega-Martos, Valent{\'\i}n and Herrero, Enrique and Feliu, Juan M",
    title = "Hydrogen peroxide and oxygen reduction studies on Pt stepped surfaces: surface charge effects and mechanistic consequences",
    journal = "Electrochimica Acta",
    volume = "334",
    pages = "135452",
    year = "2020",
    publisher = "Elsevier"
}

Details about the original figure in the publicaton (yaml).

comment: ''
fields:
- name: E
  orientation: horizontal
  reference: RHE
  type: number
  unit: V
- name: j
  orientation: vertical
  type: number
  unit: uA / cm2
measurementType: CV
scanRate:
  unit: mV / s
  value: 50.0
simultaneousMeasurements: []
type: digitized

Details about the curation process of this entry (yaml).

process:
- date: '2025-01-08'
  name: Nadine Woelfel
  orcid: https://orcid.org/0009-0008-1149-1534
  role: curator
- date: '2025-08-24'
  name: Albert Engstfeld
  orcid: https://orcid.org/0000-0002-9686-3948
  role: reviewer

---